Yealink SIP-T54S

Yealink SIP-T54S IP Phone – Wired/Wireless – Bluetooth – Wall Mountable, Desktop – Charcoal – VoIP – Caller ID – Speakerphone – 2 x Network (RJ-45) – USB – PoE Ports – Color – SIP, SIP v2, NAT, STUN, DHCP, PPPoE, SNTP, UDP, TCP, SRTP, TLS, … Protocol(s)